Ionization potential depression and dynamical structure factor in dense plasmas

Abstract

The properties of a bound electron system immersed in a plasma environment are strongly modified by the surrounding plasma. The modification of a basic quantity, the ionization energy, is described by the electronic self-energy and by dynamical screening within the framework of the quantum statistical theory. Introducing the ionic dynamical structure factor as the indicator for the ionic micro-field, we demonstrate that ionic correlations and fluctuations play a critical role in determining the ionization potential depression. This is in particular true for mixtures of different ions with large mass and charge asymmetry. The ionization potential depression is calculated for dense aluminum plasmas as well as for a CH plasma and compared to the experimental data and more phenomenological approaches used so far.

References in corpus (3)

• Quantum-mechanical calculation of ionization potential lowering in dense plasmas
• Electron-ion scattering in dense multi-component plasmas: application to the outer crust of an accreting neutron star
• Single-particle spectral function for the classical one-component plasma

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• Pauli Blocking in Degenerate Plasmas and the Separable Potential Approach
• The virial expansion of the Hydrogen equation of state in comparison to PIMC simulations: the quasiparticle concept, IPD, and ionization degree
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